Car-underframe.



d. M. ROHL FING.

0 3 UNDERFRAME. APPLICATION FILED JULY 17 1'911.

' 1 1 501 Patented May 13,1913.

2 8HBETB-SHEBT 1.

J. M. HO'HLFING-L GAR U DE FRAME. APPLICATION FILED JULYl'Y, 1911.

Patented May 13, 191s.

2 8HEET8-SEEET 2.

Wfi'i'nesses.

UNITED srarnsg a rnntr ormon.

JOHN M. ROI-ILFING, OF ST. LOUIS, MISSOURI, ASSIGNOR TO AMERICAN CAR AND FOUNDRY COMPANY, OF ST. LOUISfMISSOURI, A CORPORATION OF NEW JERSEY.

CAR-UNDERFRAME.

Specification of Letters Patent.

Patented May 13, 1913.

Application filed July 17, 1911. Serial No. 638,945.

-have invented a certain new and useful Improvenient in Car-Unde'rframes, of which the following is a full, clear, and exact description, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompairving drawings, forming part of this specification, in which Figure 1. is a side elevational view of my improved carunderframe. Fig. 2 is a top plan view partly in horizontal section. Fig. 3 is a horizontal vertical sectional view. Fig. at is a front elevational view. Fig. 5 is a sectional view taken on line 55, Fig. 2. Fig. (3 is a sectional view on line 66, Fig. 2. Fig. 7 is a sectional view on line -7-7, Fig. 2.

This invention relates to a new and useful improvement in underframes for cars, the object being to construct an underframe in which the draft sills are preferably made of castings connected at their inner ends to the bolster and to the forwardly extending web of the center sill which protrudes through the bolster, the outer end of said draft sills being connected to the end sill and interlocked with a striking plate. all of which will hereinafter be described and pointed out 1n the claims.

In the drawings: sill and 2 the bolster member. both of these members being of commercially rolled forms of I or H beams, the web of the bolster be ing cut out as shown in Figs. 2 and 3 and the top and bottom flanges of the center sill 'being cut-.away as shown in said figures, whereby the vertical web of the center sill extends forwardly through the opening in the holster. By-this construction the top and bottom flangesof tlrebolster and center sill members are flush d lld llfl flltl an alining surface for the attachment of the top cover plate 3 and the bottom cover plate a} to which latter the center .bearing 5 may be secured. Suitable connection members (3 are arranged at the junction of the inner face of the bolster member and center sill.

7 are castings constituting draft sills, the rear or inner ends of which are provided with vertical walls abutting against the SB fi'ont face of the vertical web of the bolster 1 indicates the center member, said wall being reinforced by a strengthening web 7. The vertical webs or walls of these castings at 7 are preferably rounded at their forward ends to provide striking points for the draw bar of the coupler, said walls converging inwardly toward each other forming a flaring opening in which the draw bar may swing. Suitable shoulders T are in the inner faces of these draft member castings for cooperation with the followerplates of the draft rigging, said vertical walls extending parallel for some distance beyond which they again con verge, as indicated at 7 where they are connected by suitable rivets to the forwardly extending tongue of the center sill. The draft sill members are provided with 0utwardly extending flanges at their upper and lower edges said flanges preferably continuing marginally around the front ends of said members, so as to provide attaching points for the end sill 8 which may be a commercially rolled Z bar as shown and a buffer block or striking plate casting 9.

The upper edge of the draft members preferably lies flush with the upper edge of the. bolster and center sill members for the att-aelnnent of the top cover plate, and the rear lower edge of said draft sill members lies flush with the bolster and center sill members for the attachment of the bottom cover plate. The upper forward edges of the draft sill members are reduced or cut away to receive the end sill 8 which is riveted to the flanges thereof. Beyond the pointof attachment of the end sill the 11 per edges of said draft sill members are urther reduced to accommodate the buffer block or striking plate 5) which is secured to the end sill S to stiffen the same and which extends forwardly to a point'practically coincident with the rounded forward ends of the draft sill members. This striking plate is preferably in the form of a casting comprising'a front wall S)", a top wall 9, a vertical flange 9 connected to the end sill, a horizontally disposed flange 9 arranged between the forward ends of the draftsill members so as to space them apart, end Walls? which are preferably riveted to the inner faces of the draft sill members and interiorly. arranged strengthening webs 9 which are connected to the several members of the walls and flanges as shown to reinforce them. The ends of the striking plate-are provided with horizontally disposed flanges 9 lying immediately above the rounded forward ends of the draft members to which they are connected by a rivet, as shown. The lower forward ends of the draft members are cut away, and the inset portions are extended laterally beyond the modate the head (or nut) on the horizontally disposed bolt.

11 indicates a slider casting bolted to the underside of the draft members which not only serves to space said members apart, but also to support the draft rigging in position. lVhile I have shown my improved draft sill members as being designed to take one type of draft rigging in which spring followers abut against shoulders on the inner faces of the draft members, and which thereby enables me to use horizontally disposed reinforcing webs 7 to brace said shoulders, it is obvious that-the draft members could be formed to accommodate different styles of draft rigging without departing from the nature and principle of my invention.

It will be noted that the draft sills converging at their rear ends and attached directly to the vertical web of the center sill form a rigid structure which is well able to resist the bufling and pulling strain to which car underframes are subjected. Furthermore, casting 11 spaces the draft sills apart and holds them rigid at points intermediate the bolster and end sill. Notonly does the end sill itself serve as a spacing medium, but the striking plate or buffer block acts as a spacing device and. serves to reinforce the connection of the end silland the underframe.

What I claim is:.'

1. In a car underframe, the combination of a bolster member whose vertical web is provided with an opening, a center sill member having its top and bottom flanges cut away and whose vertical web extends through the opening in said bolster member and draftsill members secured to the protruding end of the vertical Web of said center sill. I

2. In a car underframe, the combination of a bolster member, a center sill member made up of light commercially rolled sections, the vertical web of said bolster member being provided with an opening and the top and bottom flanges of said center sill member being cut away whereby the vertical web of said center sill member extends through the opening in the bolster member, and connection members forsecuring said parts together.

In testimony whereof I hereunto afiix my signature in the presence of two Witnesses, this eleventh day of July, 1911.

James J. Coornn, P; M. BEARD. v

finpies of this patent may be obtained for five iidnts each, by addressing the Washington, D. C.

Commissioner of Patents, 

